Mexicans celebrated the return of Formula One after a 23-year wait on Sunday, with a fiesta atmosphere of mariachi music, sombreros and wild cheers for favorite son Sergio Perez.

While Perez fell short of accomplishing his dream of climbing the podium in front of his home crowd, the nearly 135,000 fans roared when the Mexican driver's Force India car passed the finish line in eighth place.

Fiorentina returned to the top of the Serie A table on Sunday with an emphatic 4-1 victory over Frosinone as Napoli squandered their chance to grab pole position with a 0-0 draw at Genoa.

Paulo Sousa's Fiorentina scored all their goals in the first half at the Stadio Artemio Franchi.

Mercedes team chief Toto Wolff revealed he had told warring team-mates Nico Rosberg and Lewis Hamilton to avoid a collision in Sunday’s Mexican Grand Prix won from pole position by the 30-year-old German.

Wolff said the drivers were made "absolutely aware" of how to behave before the race in which newly-crowned world champion Hamilton resisted any temptation to mount a wheel-banging challenge to Rosberg, as he did at the first corner of the United States Grand prix in Texas seven days earlier.

Roger Federer defeated long-time rival Rafael Nadal 6-3, 5-7, 6-3 on Sunday to win his seventh title at the Swiss Indoors as he played his home final for a record tenth consecutive year.

Federer and Nadal last met in an Australian Open semi-final nearly two years ago and played their last final in Rome in 2013, both of which Nadal won.

Agnieszka Radwanska wept tears of joy on Sunday as she claimed the biggest title of her career with a tense WTA Finals victory over Petra Kvitova in Singapore.

Radwanska, who lost twice at the round-robin stage, came from a break down in the deciding set to beat an injury-impeded but gritty Kvitova 6-2, 4-6, 6-3 in two hours and five minutes.

Louis van Gaal showed his concern at Manchester United's continued failings in front of goal as he warned his side must end their drought against CSKA Moscow next week.   

United failed to score for a third successive game when they played out a scoreless draw against Crystal Palace at Selhurst Park on Saturday.

Chelsea manager Jose Mourinho vowed to plow on attempting to resurrect his team's desperate season despite a 3-1 home defeat by Liverpool creating yet more scrutiny of his position.

Liverpool's win, inspired by a brace from Philippe Coutinho, condemned Chelsea to their sixth defeat in 11 league games and left the reigning champions just four points above the Premier League relegation zone in 15th place.

World number six Agnieszka Radwanska beat Garbine Muguruza 6-7 (5/7), 6-3, 7-5 on Saturday to reach the championship round of the WTA Finals for the first time in Singapore.

The defensive tactician drew on her deeper experience to down the fast-rising Spanish star and will face either five-time Grand Slam winner Maria Sharapova or Petra Kvitova of the Czech Republic in Sunday's final.

Former Sauber driver Esteban Gutierrez of Mexico will drive for the new U.S.-based Haas team when they make their Formula One debut in 2016.

The announcement on Friday, at a press event at Mexico City's Soumaya Museum two days before the Mexican Grand Prix, confirmed the worst-kept secret in Formula One.

New Zealand take on Australia in a historic Rugby World Cup final on Saturday with All Black legend Jonah Lomu fearing his country could lose the war of nerves.

The Twickenham match starting at 1600 GMT will be the first final between the longstanding rivals in eight World Cups.